How to avoid polypyrrole deposit on counter electrode?

Hi all, Currently, I electrodeposited polypyrrole on carbon electrode but I got some problem when polypyrrole also deposited on the surface of the counter electrode. The concentration of pyrrole...

05 February 2021 2,103 3 View

How to Extract DNA from dried rhizomes, wood, galls etc. stored for a long time?

Dear Respectable Scientists, I have been trying to extract DNA from above mentioned sources using different CTAB/SDS Buffer Compositions and purifying agents but I am not able to extract DNA from...

12 January 2021 5,899 8 View

How to carry out Fisher's Exact Test in SPSS for multiple Response Dataset?

I have a dataset including Categorical variables and involves multiple response variable. 20% of the cells in cross tab has less than 5 frequencies and hence I cannot carry out a Chi-square Test....

26 December 2020 4,180 3 View

**CLOSED** Behavioral changes due to Covid-19?

Hello fellow researchers around the globe :) Happy Holidays!! We are conducting a survey on understanding how device usage during everyday life has developed amid the Covid-19...

21 December 2020 5,363 4 View

Does the Chinese navigation satellite system (Beidou) become global or still regional?

I know that this system was regional before, thus covering specific areas not alla the global

09 December 2020 3,343 3 View

Do the exams for students in electronic education have the same credibility in terms of measuring and evaluating learning as traditional education?

Educators around the world face a new challenge of how to conduct exams to assess what students have learned after the shift towards e-learning following the closure of nearly all universities...

21 September 2020 4,180 15 View

What Features Should an Online Exam System Include?

ith the development of Internet technology, online examination has become more Polar because it helps people save a great deal of energy and time. As an effective and efficient method of teaching...

21 September 2020 2,814 12 View

How can heat transfer coefficient on shell side of Shell and tube heat exchange can be calculated using Ansys Fluent?

I have to calculate heat transfer co-efficient on shell side and plot its variation along the length of heat exchanger

07 September 2020 9,078 6 View

How to get rid of negative Pressure? and my pressure readings are not accurate what can be the cause?

I am simulating shell and tube heat ex-changer i have mass flow inlet and pressure oulet (zero gauge) but my pressure readings are not accurate i have tried velocity inlet but results are same....

07 September 2020 7,298 11 View

AST result in spss ?

hello dear microbiologist Am kinda new and still learning SPSS I want to know what kind of tests should I run for AST results I see lots of paper use chi square. And can anyone provide me with...

10 August 2020 9,911 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

No title

Does anyone have the experience of using Taq Man probes in the QIAGEN Rotar- Gene qPCR machine?

01 March 2021 5,311 1 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

How can we add reinforced thermoplastics with granules in injection molding machine?

I need to make an injection molding machine in which short fibers are to be introduced. Short fiber length and material properties are to be determined and also the material strength are to be...

22 February 2021 4,290 1 View